(19)
(11) EP 1 628 301 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.06.2007 Bulletin 2007/23

(43) Date of publication A2:
22.02.2006 Bulletin 2006/08

(21) Application number: 05018096.7

(22) Date of filing: 19.08.2005
(51) International Patent Classification (IPC): 
G11B 15/12(2006.01)
G11B 5/48(2006.01)
 G11B 5/008(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 20.08.2004 JP 2004241144

(71) Applicant: FUJIFILM Corporation
Minato-ku Tokyo (JP)

(72) Inventor:
  • Shirouzu, Go
    Odawara Kanagawa (JP)

(74) Representative: Klunker . Schmitt-Nilson . Hirsch 
Winzererstrasse 106
80797 München
80797 München (DE)

   


(54) Servo writer


(57) Disclosed is a servo writer in which a servo write head (16) is easy to exchange, and which writes, to magnetic tapes (MT), a servo signal from which a reading signal of the improved SN ratio can be obtained. The servo writer includes a magnetic tape running system, at least one DC erase head (14), a plurality of servo write heads (16) being arranged downstream of the DC erase head (14), and an installation section (1) on which the servo write heads (16) are arranged and which includes a switching mechanism for switching the servo write heads (16) to position one of the servo write heads (16) at a location possible to write the servo signals on the magnetic tape (MT), like a rotatable turret (20) or a vertical moving device.







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